Package io.druid.discovery

Interface Summary

Interface	Description
DruidLeaderSelector	Interface for supporting Overlord and Coordinator Leader Elections in TaskMaster and DruidCoordinator which expect appropriate implementation available in guice annotated with @IndexingService and @Coordinator respectively.
DruidLeaderSelector.Listener
DruidNodeAnnouncer	DiscoveryDruidNode announcer for internal discovery.
DruidNodeDiscovery	Interface for discovering Druid Nodes announced by DruidNodeAnnouncer.
DruidNodeDiscovery.Listener	Listener for watching nodes in a DruidNodeDiscovery instance obtained via DruidNodeDiscoveryProvider.getXXX().

Class Summary

Class	Description
DataNodeService	Metadata announced by any node that serves segments.
DiscoveryDruidNode	Representation of all information related to discovery of a node and all the other metadata associated with the node per nodeType such as broker, historical etc.
DruidLeaderClient	This class facilitates interaction with Coordinator/Overlord leader nodes.
DruidNodeDiscoveryProvider	Provider of DruidNodeDiscovery instances.
DruidService	Metadata of a service announced by node.
LookupNodeService	Metadata announced by any node that serves queries and hence applies lookups.
WorkerNodeService	Worker metadata announced by Middle Manager.